audit-avt1-homepage: invalid role on element main

[andreancardona]

Environment:

Operating system: Mac
Browser: Chrome
AVT 1️⃣
Page: Homepage

Detailed Description:

The WAI-ARIA role or attribute 'presentation' is not valid for the element <main>

What to do:

• If a native HTML element fits the intended behavior, use that;
• OR, update the role and/or attributes using the guidance in W3C ARIA in HTML Document conformance requirements for use of "ARIA" attributes in HTML.

Why is this important?

Some HTML elements or attributes have native semantics that map by default to an implied WAI-ARIA semantics. For predictable interaction and behavior of UI controls, these implicit semantics should only be overridden in specific ways,

[andreancardona]

This bug will be fixed by the PR opened in the Carbon Gatsby Theme: carbon-design-system/gatsby-theme-carbon#944